trigger the antenna array‚ and the linear THz wave is focused by a polyethylene lens before it reaches ZnTe crystal. Keywords: Terahertz antenna‚ antenna array‚ interdigital electrodes‚ resonant dipole antenna‚ GaAs 1. INTRODUCTION Terahertz spectroscopy is of great scientific and technological interest in many fields‚ such as explosives and chemical detection [1]‚ biology threat detection [2]‚ quality control and non-destructive testing [3]‚ material analysis and testing [4] etc. In THz TDS system
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University of Maryland‚ College Park Department of Chemistry and Biochemistry CHEM 231: Organic Chemistry I‚ Fall 2014 The Highlights Bonnie Dixon TA: Courney Love Office: CHM 2130 email: bdixon1@umd.edu email: clove@umd.edu When/Where: Lecture MWF 9 a.m. – 10 a.m. in CHM 1407 Discussion T/H at 12:30 pm‚ 2 pm‚ and 3:30 pm in the CHM 1228 Course Materials: Organic
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Spectrophotometry/Beer’s Law Lecture Chemistry 114 Overview: Spectroscopy will be a tool that you will use as you continue in your chemistry‚ biology and physics courses. Already‚ you have used spectroscopy in this course and CHM 113. Earlier in the term‚ we used the spectrophotometer to monitor double stranded and single stranded DNA. We have also used it to measure concentration of chemicals. This lecture will discuss spectophotometry in more detail. Background: You will recall from
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Chemical T ests for Unknowns Chemical tests have been developed as a means of identifying what functional groups are present in an unknown compound. Since IR and NMR spectroscopy has been developed‚ they are no longer critical to unknown analysis‚ but they can still be useful for confirming what you have determined by spectroscopy. Some of them look cool too! In order for a chemical reaction to work as a chemical test‚ it must 1) create a visible result (a color change‚ a precipitate‚ etc) 2)
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braking of bonds (Levine). Using this reaction and its product‚ a redox experiment was performed to familiarize students with important organic chemistry laboratory techniques including proper mixing in an oxidation reaction‚ extraction‚ infrared spectroscopy‚ and gas chromatography. Reactants cyclohexanol and sodium hypochlorite (NaOCl) undergo a redox reaction and when combined with the catalyst acetic acid (HOAc) and solvent water (H2O)‚ form the product cyclohexanone along with sodium chloride
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2010 SiO2-TiO2 mixed oxides have been prepared by sol-gel technique from titanium tetraisopropoxide and tetraethylorthosilicate. The prepared materials were characterized by X-ray diffraction‚ FT-IR spectroscopy‚ scanning electron microscopy‚ nitrogen physisorption and UV-vis diffuse reflectance spectroscopy. The results indicate that compared to pure TiO2‚ the SiO2-TiO2 mixed oxides show higher thermal stability‚ larger surface area‚ greater band gap energy and smaller crystallite size. The higher thermal
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* 0.63g of Silica Gel 15ml of Ethyl Acetate * 25 mL Erlenmelyer flask Glass rod * Microwave oven Pyrex watch glass * Beaker Cuvette * UV-VIS spectroscopy * 0.43 mL of benzaldehyde
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Nano-Bio-Sensing Sandro Carrara Editor Nano-Bio-Sensing Foreword by Giovanni De Micheli Editor Sandro Carrara EPFL Lausanne Switzerland sandro.cararra@epfl.ch ISBN 978-1-4419-6168-6 e-ISBN 978-1-4419-6169-3 DOI 10.1007/978-1-4419-6169-3 Springer New York Dordrecht Heidelberg London Library of Congress Control Number: 2010938597 # Springer Science+Business Media‚ LLC 2011 All rights reserved. This work may not be translated or copied in whole or in part without the written permission
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ISOLATION AND CHARACTERIZATION OF NUCLEIC ACIDS Jan Eric C. Balete‚ Dorinne P. Barretto‚ Divine Trisha Angela T. Batac‚ Neill Steven C. Cachuela‚ Karel D. Cartagena Group 2 2C Medical Technology Biochemistry Laboratory ABSTRACT fgdfgdgdfgfdfgd INTRODUCTION Nucleic acids are informational molecules with their primary structure containing a code or set of directions by which they can duplicate themselves and guide the synthesis of proteins. [1] They are very large molecules built from subunits
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Study Guide for the BME5 Midterm The midterm will cover information from lectures 1-4. Subject areas that are fair game for the test are listed below. I may not use every single item in the exam. Note that the level of detail required is that which was covered in lecture. Only information covered in lecture will be on the tests (includes info in figures and tables). Lecture 1 Processes that utilize recombinant DNA technology (and molecular processes that don’t) Basic science; what it is‚
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